NameError: .box-shadow is undefined in /Users/haifeng/IT/01_Study/github_projects/js_framework/public/js/lib/bootstrap/3.0.0/css/wells.less on line 14, column 3:
13   border-radius: @border-radius-base;
14   .box-shadow(inset 0 1px 1px rgba(0,0,0,.05));
15   blockquote {

